Ornithorhynchidae

Platypi

<tr><th bgcolor=pink>Scientific classification <tr><td>

<tr><td>Kingdom:<td>Animalia <tr><td>Phylum:<td>Chordata <tr><td>Class:<td>Mammalia <tr><td>Order:<td>Monotremata <tr><td>Family:<td>Ornithorhyncidae </table> <tr><th bgcolor=pink>Genera <tr><td> Obdurodon (extinct)
Ornithorhynchus </table> Ornithorhyncidae is one of two families in the order Monotremata, and contains all species of platypus. (The other family is the Tachyglossidae, or echidnas). Within Ornithorhynchidae are two genera, Obdurodon and Ornithorhynchus:

Family Ornithorhynchidae
- Genus Obdurodon -- an ancient branch of the platypus family
  - Species Obdurodon dicksoni (extinct)
  - Species Obdurodon insignis (extinct)
  - Species Obdurodon/Monotrematum sudamericanum (extinct)
- Genus Ornithorhynchus
  - Species Ornithorhynchus anatinus (alive but threatened: the modern platypus)

Another two genera, Steropodon and Teinolophos may also be part of the family Ornithorhynchidae. However, they are both very ancient, and scientific literature seems to indicate that they are closely related to, but not a part of, the Ornithorhynchids.

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